Packing for stuffing-boxes.



O. LINGNER.

PACKING FOR STUFFIN G BOXES. APPLICATION FILED JUNE 28, 1909.

$945,790, Patented Jan 11,1910.

I D. C. ANDREW B GHANA C0,. PNOTO-LIYHOGRAPHERS, WASHINGYON FETCH OSCARLINGNER, OF DRESDEN-NEUSTADT, GERMANY.

PACKING FOR STUFFING-BOXES.

9&5, 790.

To all whom it may concern:

Be it known that I, OSCAR LINGNER, a citizen of the Kingdom of Saxony,residing as Dresden-Neustadt, Saxony, in the Empire of Germany, haveinvented certain new and useful Improvements in Packing forStuifing-Boxes, of which the following is a specification.

Packings for stufling boxes are well known in which asbestos hemp orcotton fibers are used with metal shavings. Such packing consists of aloose dry mass or of a mass that can be kneaded. Sometimes thesesubstances are also plaited or braided. All such packings however haveserious disadvantages as owing to the heating and to the pressure, thefat is easily expressed from the wrapping, whereupon the mass remainingin the stufling box soon becomes felted. XV hen such a mass dries,damage to the piston rod easily results. According to this invention thedrying of the packing is prevented. The yarn before it is plaited orbraided, is treated with a preparation of fiber and metal shavings. Thetreatment is elfected in such manner that the yarn is impregnatedthrough and through with the fiber preparation and the soft metalshavings by means of a felting or similar process. The fiber thusobtained is then subjected to a further treatment. Hopes of any desiredcross-section, thickness and length are prepared from it. It is alsopossible to prepare from the new packing material, single rings whichcan be placed around the piston rod. Packing of this kind acts to thehighest degree as automatically lubricating, it is very elastic andcannot damage the piston or pump rods.

The yarn used can be asbestos, hemp, cotton or the like.

Specification of Letters Patent.

Application filed June 28, 1909.

Patented Jan. 11, 1910.

Serial No. 504,709.

The invention is illustrated in the accompanying drawing, in which apiece of rope of rectangular cross-section is shown.

The single threads a are plaited or braided as shown. Each thread a isimpregnated single in the above mentioned manner before plaiting.

The process can be carried out, for instance, in the following manner: Apaste consisting of fibrous material and soft metal shavings is placedin a vat and thoroughly stirred. The threads a are guided through thesaid paste, and the threads can be energetically pulled to and fro bymeans of suitably formed arms or the like, that is to say, they can beexposed to a kind of felting process, a great deal of the substance(fibrous material and soft metal) being absorbed by the threads.

That I claim as my invention and desire to secure by Letters Patentis 1. A process for manufacturing stuffing box packing, in which fibrouspacking yarn is impregnated, before it is braided or plaited, with afiber preparation containing soft metal shavings.

2. As an article of manufacture stuffing box packing of fibrousmaterial, the yarns of which are impregnated with a fiber preparationcontaining soft metal shavings, before the yarn is braided or plaited. V

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OSCAR LINGNER.

l i itnesses ULYSSES J. BYWATER, CLARE SIMON.

